Peds: Henoch-Schonlein Purpura

HSP
-peaks 4-5 yrs old, may occur at any age; winter and early spring
-strep, mycoplasma, hep b, antibx, food antigens, salicylates
-skin - involved in most; petechiae form purpura, gravity dependent buttocks and legs
-painless edema of dorsum of hands and feet, painful of scalp and face
-GI - 50-90% with vomiting or bleeding; intuss, pancreatitis, or bowel infarcts
-joints - 50-75% transitory non-migratory, periarticular swelling, knees, ankles
-renal - 50% may be permanent, gross hematuria 30-40%

Rx:
-steroids for abd pain and renal involvement